Hi, I'm Cain from the Netherlands.
I love randomizers: that moment when the Hookshot turns up in a random pot, or your Nuzlocke ace goes down to a surprise crit. What I didn't love was keeping track of everything on scraps of paper or across five browser tabs.
So I built spreadsheets that do it for me. Tick an item and the row turns green. Beat a boss and your next level cap appears. Your progress bars fill up as you play. Now I'm sharing them with other players.